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Deep learning models often struggle under natural distribution shifts, a common challenge in real-world deployments. Test-Time Adaptation (TTA) addresses this by adapting models during inference without labeled source data. We present the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 John Turnbull , Shivam Grover , Amin Jalali , Ali Etemad

Learning discriminative 3D representations that generalize well to unknown testing categories is an emerging requirement for many real-world 3D applications. Existing well-established methods often struggle to attain this goal due to…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Zhichuan Wang , Yang Zhou , Jinhai Xiang , Yulong Wang , Xinwei He

Deep neural networks often encounter significant performance drops while facing with domain shifts between training (source) and test (target) data. To address this issue, Test Time Adaptation (TTA) methods have been proposed to adapt…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Siqi Luo , Yi Xin , Yuntao Du , Tao Tan , Guangtao Zhai , Xiaohong Liu

Pre-trained vision-language models, e.g., CLIP, working with manually designed prompts have demonstrated great capacity of transfer learning. Recently, learnable prompts achieve state-of-the-art performance, which however are prone to…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Baoshuo Kan , Teng Wang , Wenpeng Lu , Xiantong Zhen , Weili Guan , Feng Zheng

Real-world time series often exhibit a non-stationary nature, degrading the performance of pre-trained forecasting models. Test-Time Adaptation (TTA) addresses this by adjusting models during inference, but existing methods typically update…

Machine Learning · Computer Science 2025-07-01 Heitor R. Medeiros , Hossein Sharifi-Noghabi , Gabriel L. Oliveira , Saghar Irandoust

Since distribution shifts are likely to occur during test-time and can drastically decrease the model's performance, online test-time adaptation (TTA) continues to update the model after deployment, leveraging the current test data.…

Computer Vision and Pattern Recognition · Computer Science 2023-10-27 Robert A. Marsden , Mario Döbler , Bin Yang

Many recent machine learning tasks focus to develop models that can generalize to unseen distributions. Domain generalization (DG) has become one of the key topics in various fields. Several literatures show that DG can be arbitrarily hard…

Machine Learning · Computer Science 2023-05-11 Yi-Fan Zhang , Xue Wang , Kexin Jin , Kun Yuan , Zhang Zhang , Liang Wang , Rong Jin , Tieniu Tan

Given the inevitability of domain shifts during inference in real-world applications, test-time adaptation (TTA) is essential for model adaptation after deployment. However, the real-world scenario of continuously changing target…

Machine Learning · Computer Science 2023-11-28 Junyoung Park , Jin Kim , Hyeongjun Kwon , Ilhoon Yoon , Kwanghoon Sohn

Small Vision-Language Models (VLMs) provide a computationally efficient alternative to larger models, at the cost of weaker generalization abilities and downstream task performance. These shortcomings could be addressed by test-time scaling…

Machine Learning · Computer Science 2026-02-17 Mehmet Onurcan Kaya , Desmond Elliott , Dim P. Papadopoulos

Test-time adaptation (TTA) methods, which generally rely on the model's predictions (e.g., entropy minimization) to adapt the source pretrained model to the unlabeled target domain, suffer from noisy signals originating from 1) incorrect or…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Jungsoo Lee , Debasmit Das , Jaegul Choo , Sungha Choi

Test-time adaptation (TTA) addresses the unforeseen distribution shifts occurring during test time. In TTA, performance, memory consumption, and time consumption are crucial considerations. A recent diffusion-based TTA approach for…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Yeongtak Oh , Jonghyun Lee , Jooyoung Choi , Dahuin Jung , Uiwon Hwang , Sungroh Yoon

Test-time adaptation (TTA) offers a compelling remedy for machine learning (ML) models that degrade under domain shifts, improving generalisation on-the-fly with only unlabelled samples. This flexibility suits real deployments, yet…

Machine Learning · Computer Science 2026-02-09 Sudarshan Sreeram , Young D. Kwon , Cecilia Mascolo

Test-time adaptation (TTA) aims to address the distribution shift between the training and test data with only unlabeled data at test time. Existing TTA methods often focus on improving recognition performance specifically for test data…

Machine Learning · Computer Science 2024-08-28 Yongcan Yu , Lijun Sheng , Ran He , Jian Liang

Ensemble methods improve predictive performance but often incur high memory and computational costs. We identify an aggregation instability induced by nonlinear projection and voting operations. To address both efficiency challenges and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Zheng Li , Jerry Cheng , Huanying Helen Gu

Performance of convolutional neural networks (CNNs) in image analysis tasks is often marred in the presence of acquisition-related distribution shifts between training and test images. Recently, it has been proposed to tackle this problem…

Computer Vision and Pattern Recognition · Computer Science 2022-02-14 Neerav Karani , Georg Brunner , Ertunc Erdil , Simin Fei , Kerem Tezcan , Krishna Chaitanya , Ender Konukoglu

Test-Time Adaptation (TTA) has emerged as a crucial solution to the domain shift challenge, wherein the target environment diverges from the original training environment. A prime exemplification is TTA for Automatic Speech Recognition…

Computation and Language · Computer Science 2024-08-13 Eunseop Yoon , Hee Suk Yoon , John Harvill , Mark Hasegawa-Johnson , Chang D. Yoo

Test-time adaptation (TTA) aims to adapt a pre-trained model to the target domain in a batch-by-batch manner during inference. While label distributions often exhibit imbalances in real-world scenarios, most previous TTA approaches…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Sunghyun Park , Seunghan Yang , Jaegul Choo , Sungrack Yun

Existing test-time adaptation (TTA) approaches often adapt models with the unlabeled testing data stream. A recent attempt relaxed the assumption by introducing limited human annotation, referred to as Human-In-the-Loop Test-Time Adaptation…

Computer Vision and Pattern Recognition · Computer Science 2024-12-25 Yushu Li , Yongyi Su , Xulei Yang , Kui Jia , Xun Xu

In computer vision, Visual Prompting (VP) and Visual Prompt Tuning (VPT) have recently emerged as lightweight and effective alternatives to full fine-tuning for adapting large-scale vision models within the "pretrain-then-finetune"…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 Xi Xiao , Yunbei Zhang , Lin Zhao , Yiyang Liu , Xiaoying Liao , Zheda Mai , Xingjian Li , Xiao Wang , Hao Xu , Jihun Hamm , Xue Lin , Min Xu , Qifan Wang , Tianyang Wang , Cheng Han

Continual Test-Time Adaptation (CTTA) aims to empower perception systems to handle dynamic distribution shifts encountered after deployment. Existing methods predominantly follow a backward-alignment paradigm, which rigidly aligns incoming…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Zhilin Zhu , Yabin Wang , Zhiheng Ma , Yaguang Song , Yaowei Wang , Xiaopeng Hong